Valve element structure for plug-in type quick connector

Abstract

The utility model relates to a connecting device capable of being quickly disassembled and assembled, in particular to a valve element structure for a plug-in type quick connector. A valve element structure for a plug-in type quick connector comprises a shell and a connector body, the outer wall of the front portion of the connector body is sleeved with the shell, a mounting opening is formed in the side wall of the shell, a switch is arranged in the mounting opening, the lower portion of the switch is inserted into the mounting opening and connected with a valve element in a clamped mode, a fixing bolt is inserted into the switch and the valve element to be fixed, and a safety lock structure and a misoperation structure are arranged on the switch and the shell. The middle of the valve element is transversely through, and a runner opening is reserved. The utility model has the beneficial effects that the structure is novel, the design is ingenious and simple, the middle part of the valve core blocks or opens the flow channel by rotating the switch, and the two sides can be operated independently to open the flow channel independently.

Description

Technical Field

[0001] The utility model relates to a connecting device with quick disassembly and assembly, in particular to a valve core structure for a plug-in quick joint. Background Art

[0002] Quick joints include hydraulic quick joints and various fluid quick joints. It is a connecting device for quickly connecting or disconnecting pipelines to achieve quick disassembly and assembly. Since the quick joint has a two-way check valve function and there is no leakage when the pipeline is disconnected, it is widely used in the fields of petroleum, metallurgy, hydropower, construction machinery, ships, electromechanical equipment, etc. The connection structure of the quick joint is the most important part of the quick joint, and its connection method and structure directly determine the convenience, reliability and product quality of the quick joint. The quick joint consists of a female joint and a male joint. The existing valve core is pushed, and the flow channel is opened when the connection is completed, which cannot be independently controlled and may affect the use effect of the quick joint. Summary of the Invention

[0003] In order to solve the above technical problem of being unable to independently control the unilateral flow channel, the utility model provides a valve core structure for a plug-in quick joint.

[0004] The technical solution of the utility model is as follows:

[0005] The valve core structure for a plug-in quick joint includes a shell and a joint body. The front outer wall of the joint body is sleeved with the shell. The side wall of the shell is provided with an installation port. A switch is arranged in the installation port. The lower part of the switch is inserted into the installation port and is clamped with the valve core. A fixing bolt is inserted into the switch and the valve core for fixation. The switch and the shell are provided with a safety lock structure and a misoperation structure. The middle of the valve core is transversely penetrated with a flow port left.

[0006] A buckle is arranged on the front end surface of the shell.

[0007] The middle part of the valve core is spherical.

[0008] The front outer wall of the joint body is provided with a recessed groove a and a recessed groove b. A joint body O-ring a is arranged in the recessed groove a, and a joint body O-ring b is arranged in the recessed groove b. A connecting steel pin is arranged between the shell and the joint body.

[0009] The outer wall of the lower part of the switch is provided with a recessed groove c. A switch O-ring is arranged in the recessed groove c. The switch O-ring is in contact with the installation port. An upper valve core gasket is arranged on the outer wall at the connection between the switch and the valve core. A valve core sealing ring is arranged between the outer wall of the valve core and the inner wall of the shell. A positioning pin is arranged at the center of the bottom end of the valve core. The positioning pin is sleeved on the lower valve core gasket. The positioning pin is inserted into the inner wall of the shell. The middle of the bottom of the positioning pin is recessed, and a positioning pin spring is arranged in the recess. The positioning pin spring is arranged in a fixing groove. The upper part of the rod body of the fixing bolt is recessed, and a fixing bolt O-ring is arranged in the recess.

[0010] A dust-proof ring is provided on the outer wall of the front part of the housing, and a housing sealing ring is provided on the surface. The housing sealing ring is located inside the buckle. An insertion groove is provided on one side of the buckle, and a buckle seat is provided on one side of the insertion groove. A ring body is provided in the middle of the housing.

[0011] Using the technical solution of the present utility model, the structure is novel, the design is ingenious and simple. By rotating the switch, the middle part of the valve core blocks or opens the flow channel, and both sides can be operated independently to independently open the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural view of the present utility model;

[0013] Figure 2 is a schematic structural view of the opened flow channel;

[0014] Figure 3 、 4 、5 are schematic structural views of the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments. Embodiment

[0016] As Figure 1 、 2 、3, 4, 5 show the valve core structure for a plug-in quick connector, including a housing 1 and a joint body 2. The outer wall of the front part of the joint body 2 is sleeved with the housing 1. An installation port is provided on the side wall of the housing 1. A switch 3 is provided in the installation port. The lower part of the switch 3 is inserted into the installation port and is clamped with the valve core 6. A fixing bolt 7 is inserted into the switch 3 and the valve core 6 for fixation. Safety lock structures and misoperation structures are provided on the switch 3 and the housing 1. The middle part of the valve core 6 is transversely penetrated to leave a flow port.

[0017] A buckle is provided on the front end surface of the housing 1.

[0018] The middle part of the valve core 6 is spherical.

[0019] Depression grooves a and b are provided on the outer wall of the front part of the joint body 2. A joint body O-ring a is provided in the depression groove a, and a joint body O-ring b19 is provided in the depression groove b. A connecting steel pin 8 is provided between the housing 1 and the joint body 2.

[0020] The outer wall of the lower part of the switch 3 is provided with a recessed groove c, in which a switch O-ring 20 is provided. The switch O-ring 20 contacts the mounting port. An upper washer 17 for the valve core is provided on the outer wall at the connection between the switch 3 and the valve core 6. A valve core sealing ring 14 is provided between the outer wall of the valve core 6 and the inner wall of the housing 1. A positioning pin 5 is provided at the center of the bottom end of the valve core 6. The positioning pin 5 is sleeved on the lower washer 18 for the valve core. The positioning pin 5 is inserted into the inner wall of the housing 1. The middle of the bottom of the positioning pin 5 is recessed, and a positioning pin spring 13 is provided at the recess. The positioning pin spring 13 is arranged in the fixing groove. The upper part of the rod body of the fixing bolt 7 is recessed, and a fixing bolt O-ring 21 is provided at the recess.

[0021] A dust-proof ring 16 is provided on the outer wall of the front part of the housing 1, and a housing sealing ring 15 is provided on the surface. The housing sealing ring 15 is located inside the buckle. An insertion groove 25 is provided on one side of the buckle. A buckle seat is provided on one side of the insertion groove 25. A ring body is provided in the middle of the housing 1.

[0022] During use, the plug-in quick connector includes a unit female connector. The number of the unit female connectors is two. A safety lock structure and a connection unlocking structure are provided on the switch 3 and the housing 1. The safety lock structure includes a switch spring 12, a steel ball b 23 and a switch pin 4. A movable groove a is provided horizontally on the switch 3. The switch spring 12 and the switch pin 4 are provided in the movable groove a. The switch spring 12 is inserted into the card slot of the switch pin 4. A limiting ring a is provided in the middle of the switch pin 4. A through hole a is provided below the switch pin 4. The steel ball b 23 is provided in the through hole a. The steel ball b 23 contacts the movable groove 24. Grooves are provided at both ends of the movable groove. The connection unlocking structure includes a moving pin 10, a locking pin spring 11, a steel ball a 22 and a locking pin 9. A tooth body is provided inside the switch 3. The tooth body is connected to the tooth part of the moving pin 10. The front part of the moving pin 10 is a positioning rod. A limiting ring b is provided in the middle of the positioning rod. The limiting ring b contacts the steel ball a 22. The steel ball a 22 is provided in the through hole b. On the other side of the through hole b are the locking pin spring 11 and the locking pin 9. The locking pin spring 11 is arranged in the movable groove b. The locking pin spring 11 contacts the locking pin 9. A limiting ring c is provided in the middle of the locking pin 9. A limiting table body is provided at the rear end of the locking pin 9. By rotating the switch, the middle part of the valve core blocks or opens the flow channel, and the two sides can be operated independently and the flow channel can be independently opened.

[0023] It should be understood that the above are only the preferred embodiments of the present invention and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, additions, deletions, substitutions, transformations or improvements can be made according to the above description, and all these technical solutions after the additions, deletions, substitutions, transformations or improvements shall fall within the protection scope of the appended claims of the present invention.

Claims

1. The valve core structure for a plug-in quick connector, comprising a housing (1) and a connector body (2), characterized in that: A housing (1) is sleeved on the outer wall of the front part of the joint body (2). An installation port is provided on the side wall of the housing (1), and a switch (3) is arranged in the installation port. The lower part of the switch (3) is inserted into the installation port and is clamped with a valve core (6). A fixing bolt (7) is inserted into the switch (3) and the valve core (6) for fixation. A safety lock structure and a misoperation structure are provided on the switch (3) and the housing (1). The middle of the valve core (6) is transversely penetrated to leave a flow port.

2. The valve core structure for the plug-in quick connector according to claim 1, wherein: A buckle is provided on the front end surface of the housing (1).

3. The spool structure for the plug-in quick connector according to claim 1, characterized in that: The middle part of the valve core (6) is spherical.

4. The valve core structure for the plug-in quick connector according to claim 1, wherein: The outer wall of the front part of the joint body (2) is provided with a recessed groove a and a recessed groove b. A joint body O-ring a is arranged in the recessed groove a, and a joint body O-ring b (19) is arranged in the recessed groove b. A connecting steel pin (8) is provided between the housing (1) and the joint body (2).

5. The valve core structure for a plug-in quick connector according to claim 1, characterized in that: The outer wall of the lower part of the switch (3) is provided with a recessed groove c, and a switch O-ring (20) is arranged in the recessed groove c. The switch O-ring (20) contacts the installation port. A valve core upper gasket (17) is provided on the outer wall at the connection between the switch (3) and the valve core (6). A valve core sealing ring (14) is provided between the outer wall of the valve core (6) and the inner wall of the housing (1). A positioning pin (5) is provided at the center of the bottom end of the valve core (6). The positioning pin (5) is sleeved on a valve core lower gasket (18). The positioning pin (5) is inserted into the inner wall of the housing (1). The bottom of the positioning pin (5) is recessed in the middle, and a positioning pin spring (13) is arranged at the recessed part. The positioning pin spring (13) is arranged in a fixing groove. The upper part of the rod body of the fixing bolt (7) is recessed, and a fixing bolt O-ring (21) is arranged at the recessed part.

6. The spool structure for a plug-in quick connector according to claim 1, characterized in that: A dust-proof ring (16) is provided on the outer wall of the front part of the housing (1), and a housing sealing ring (15) is provided on the surface. The housing sealing ring (15) is located inside the buckle. An insertion groove (25) is provided on one side of the buckle. A buckle seat is provided on one side of the insertion groove (25). A ring body is provided in the middle of the housing (1).

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